Utilization ofMentha arvensiswaste biomass for the removal of Pb(II) and Co(II) from aqueous solutions

Abstract

A B S T R A C TThis paper reports on the potential utility of Mentha arvensis for the removal of Pb(II) and Co(II) ions from simulated water samples. Maximum biosorption capacity value of 111.97 and 116.93 mg/g was obtained for Pb(II) and Co(II), respectively. Triton X-100-treated biomass showed remarkable increase in the biosorption capacity of biomass for Pb(II) and HCl treated for Co(II) ions, respectively. The influence of solution pH, biosorbent dose, metal ions concentration, particle size of biosorbent, and contact time on the biosorption process was also studied. Batch biosorption equilibrium data were fitted to both Langmuir and Freundlich adsorption isotherms, but the Langmuir had a better fit with the results. Reaction kinetics was best described by pseudo-second-order kinetic model. The biosorption capacity of waste biomass decreased with an increase in the temperature indicating exothermic nature of the biosorption. Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM) analyses were carried out to examine functional groups and surface morphology of biomass. Results indicated that biosorption of the Pb(II) and Co(II) ions onto M. arvensis is an economical and environment-friendly method for wastewater treatment.

Kinetic and thermodynamic study of cobalt adsorption by spent coffee

“…Increase 10˚C in temperature causes an average reduction in uptake percentage of 2.2%. This behavior may signify that adsorption occurred with electrostatic interactions, where the weakest bond can be broken with the increase in the temperature [1]. This indicates that the process was exothermic and of physical nature.…”

“…Co(II) is a very toxic element affecting the environment and human health. Cobalt is used in many important industrial applications (for example, in metallurgy, dyes, and electronics industries), it is also a relatively abundant product in the nuclear reactors and it constitutes a source of radioactive waste from these installations [1]. Moreover, the presence of cobalt-60 in the environment resulting from these operations was a question of concern because of its radiotoxicity, its long half-life (10 years), and its high solubility in water.…”

“…That is why a variety of adsorbents, including clays, zeolites, agricultural waste biomass [3], Mentha arvensis [1], agro-wastes [4], and mushroom [5].…”

Marula seed husk (Sclerocarya birrea) biomass as a low cost biosorbent for removal of Pb(II) and Cu(II) from aqueous solution

“…Biosorption of heavy metals on the surface of biomaterials occur through different functional groups such as amino, carboxylic, hydroxyl, phenolic, ester, sulfhydryl and phosphate [12]. Recently, many industrial, agricultural and forestry sources such as poly(vinyl pyridine-poly ethylene glycol methacrylateethylene glycol dimethacrylate) beads [16], Phanerochaete chrysosporium [17], Mentha arvensis [18], Coriolus versicolor [19], low cost agricultural waste [20], Eucalyptus citriodora [21], iron oxide nanomaterials [22], maize tassel [23], etc. have been used as biosorbents successfully, but high volumes of wastewater still demands exploration of newer adsorbents.…”

Effects of surface modification on heavy metal adsorption performance and stability of peanut shell and its extracts of cellulose, lignin, and hemicellulose

“…Waste water containing heavy metal ions was discharged in many industries including metal plating industry, batteries, electroplating, metallurgy, and mining operations (Manzoor et al 2013;Renu Agarwal et al 2017). Due to their unique biological toxicity and easy accumulation, heavy metalcontaining waste water poses a serious threat to ecosystem and human health even at low concentration (Bhatti et al 2013). Removal of heavy metals from aqueous solution is of great importance in environmental terms.…”